Square coffee table



FIG. 1 is a front perspective view of a square coffee table, showing my new design;

FIG. 2 is a right elevational view thereof, the left side elevational view being a mirror image thereof;

FIG. 3 is a front elevational view thereof, the rear elevational view being a mirror image thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a top plan view thereof.

The broken line portion of the figure drawings is included to show environmental structure that forms no part of the claimed design. 

CLAIM The ornamental design for a square coffee table, as shown and described. 